You need to be sure that before you get a LCD display UPS inverter pure sine wave 3500W 7000W(peak)12v to 220v Inverter+Charger & UPS,Quiet and Fast Charge power supply you have previously seen and browse the detail of the merchandise first. This way you could be sure that you are getting the proper product that may suit your needs.
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It is a 12v battery charger and an automatic UPS system.

Switching Time : ≤10ms

It is very suitable for using it to power many devices such as tv, fridge, light, computer, hifi, ...and at the same time it is a power back up for somewhere has electricity unsteady problem.

It can be used as an UPS system for computer so the computer will never have data lost due to suddenly no power.

UPS function : full name is Uninterruptible Power Supply. When commercial power on, inverter use commercial power to the load and charging battery auto; when commercial power off suddently, inverter transfer to use battery back up power ot the loads automatially, and the transfer time is less 10mS.

Charging function : inverter with charge plug, which can charge battery form commercial power directly.

Input:

Input voltage: DC12V

Working Voltage: DC10V-15V

Start no load current: <1A

Output:

Rated power: 3500W

Peak power: 7000W

Efficiency: >85%

Output voltage: AC220V+/-5%

Output frequency: 50Hz+/-3%

Output waveform: Pure Sine Wave

UPS Charging function:

Charging current: 12A

Input AC charging voltage: 180V-240V

Charging output no-load voltage: 14.5-16V

Output mode: Mains preferred

Switch time: 10ms

Model No.

UPS2500W-12V

Continuous Output Power

3500W

Max Output Power

7000W

DC Input Voltage

DC 12V

AC Output Voltage

210-240V AC(for 230V/220V/240V)

Frequency

50Hz±2Hz

Efficiency

85%

No Load current Draw

<1A

Output Wave Form

Pure Sine Wave

Inversion Efficiency

>90%

Temperature Protection

(75 ± 5)

Input Low Voltage Protection

YES

Input Reverse Polarity

YES

Output Short Circuit Protection

YES

Overload Protection

YES

Net weight / Gross weight

7.8kg / 9.7kg

Size

35*24*16 CM

Ideally suitable for Journeys, Camping, Tents, Boat Trip, Working on the way and everywhere, where is no electricity! Simply connect the Power Inverter with a Battery and then connect to electrical appliances.